<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
        <style>
         .nav {
             height: 50px;
             border-top: 3px solid orange;
             border-bottom: 1px solid #fcfcfc;
             background-color: #fff;
         }
         .nav a {
             height: 50px;
             line-height: 50px;
             display:inline-block;
             color: #4c4c4c;
             text-decoration: none;
             padding-left: 18px;
             padding-right: 18px;
             font-size: 14px;
         }
         .nav a:hover{
             background-color: #edeef0;
             color: #ff8400;
         }
        </style>
</head>
<body>
    <div class="nav">
        <a href="#">首页</a>
        <a href="#">移动客户端</a>
        <a href="#">嘿嘿嘿嘿</a>
        <a href="#">哈哈哈</a>
    </div>
</body>
</html>